Did you ever wonder how some websites get tons of traffic in no time. Check out the secret behind this massive traffic -- Social Media Websites.

Here's a list of some of the popular/emerging social media sites and the volume of traffic their front-pages are capable of sending.

StumbleUpon can send traffic in the amount of 1,000 to 40,000 within 3 days after getting around 50 stumbles.

There is a new sheriff in town, there have been reports of Yahoo! Buzz sending over one million visitors to a frontpage story. From what I have heard off one or two bloggers you can generally expect just short of half a million uniques.

Social news site Digg is renowned for crashing servers, this is mainly because of the volume of visitors it sends in such a short space of time when a submission 1st hits the frontpage.

Posts on the community-based news site Fark's frontpage can get around 2,000 to 20,000 traffic volume.

Providing you have some decent news or a story that will interest the community Reddit is a sure thing for a quick burst of visitors. The amount of visitors a popular link receives will depend on how far up the frontpage it goes and how long it stays there for.

The traffic that the social tagging site Del.icio.us sends is spread over time. Given that your article hit its front page, you can get between 500 to 5,000 visitors within a short period of time.

Front page landers on Propeller are not guaranteed much to receive high traffic, unless you're in the Top 5, which can send around 50 to 3,500 visitors.

The mother tech news site Slashdot (/.) can still send a huge amount of traffic if you get your submission approved. The bulk of the traffic popular links receive is spread over the 24 hours or so that they are on the frontpage.

Internet marketing social site Sphinn can drive some really targeted traffic if you have the right content. Popular submissions can receive a couple of hundred visitors in less then 24 hours.

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